linux-kernel - [PATCH v8 12/22] PCI: microchip: Add num_events field to struct plda_pcie

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Message-ID: <20231011110514.107528-13-minda.chen@starfivetech.com>
Date:   Wed, 11 Oct 2023 19:05:04 +0800
From:   Minda Chen <minda.chen@...rfivetech.com>
To:     Conor Dooley <conor@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh+dt@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        "Daire McNamara" <daire.mcnamara@...rochip.com>,
        Emil Renner Berthing <emil.renner.berthing@...onical.com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-pci@...r.kernel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Mason Huo <mason.huo@...rfivetech.com>,
        Leyfoon Tan <leyfoon.tan@...rfivetech.com>,
        Kevin Xie <kevin.xie@...rfivetech.com>,
        Minda Chen <minda.chen@...rfivetech.com>
Subject: [PATCH v8 12/22] PCI: microchip: Add num_events field to struct plda_pcie_rp

The event num is different in other platform. For re-use
interrupt process codes, replace with variable.

Signed-off-by: Minda Chen <minda.chen@...rfivetech.com>
Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
---
 drivers/pci/controller/plda/pcie-microchip-host.c | 7 ++++---
 drivers/pci/controller/plda/pcie-plda.h           | 1 +
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/plda/pcie-microchip-host.c b/drivers/pci/controller/plda/pcie-microchip-host.c
index 5a20d5a03d36..1799455989ac 100644
--- a/drivers/pci/controller/plda/pcie-microchip-host.c
+++ b/drivers/pci/controller/plda/pcie-microchip-host.c
@@ -649,7 +649,7 @@ static void plda_handle_event(struct irq_desc *desc)
 
 	events = mc_get_events(port);
 
-	for_each_set_bit(bit, &events, NUM_EVENTS)
+	for_each_set_bit(bit, &events, port->num_events)
 		generic_handle_domain_irq(port->event_domain, bit);
 
 	chained_irq_exit(chip, desc);
@@ -812,7 +812,7 @@ static int plda_pcie_init_irq_domains(struct plda_pcie_rp *port)
 		return -EINVAL;
 	}
 
-	port->event_domain = irq_domain_add_linear(pcie_intc_node, NUM_EVENTS,
+	port->event_domain = irq_domain_add_linear(pcie_intc_node, port->num_events,
 						   &mc_event_domain_ops, port);
 	if (!port->event_domain) {
 		dev_err(dev, "failed to get event domain\n");
@@ -915,7 +915,7 @@ static int plda_init_interrupts(struct platform_device *pdev, struct plda_pcie_r
 	if (irq < 0)
 		return -ENODEV;
 
-	for (i = 0; i < NUM_EVENTS; i++) {
+	for (i = 0; i < port->num_events; i++) {
 		event_irq = irq_create_mapping(port->event_domain, i);
 		if (!event_irq) {
 			dev_err(dev, "failed to map hwirq %d\n", i);
@@ -1007,6 +1007,7 @@ static int mc_host_probe(struct platform_device *pdev)
 
 	bridge_base_addr = port->axi_base_addr + MC_PCIE_BRIDGE_ADDR;
 	plda->bridge_addr = bridge_base_addr;
+	plda->num_events = NUM_EVENTS;
 
 	/* Allow enabling MSI by disabling MSI-X */
 	val = readl(bridge_base_addr + PCIE_PCI_IRQ_DW0);
diff --git a/drivers/pci/controller/plda/pcie-plda.h b/drivers/pci/controller/plda/pcie-plda.h
index 7ff7ff44c980..b439160448b1 100644
--- a/drivers/pci/controller/plda/pcie-plda.h
+++ b/drivers/pci/controller/plda/pcie-plda.h
@@ -118,6 +118,7 @@ struct plda_pcie_rp {
 	raw_spinlock_t lock;
 	struct plda_msi msi;
 	void __iomem *bridge_addr;
+	int num_events;
 };
 
 irqreturn_t plda_event_handler(int irq, void *dev_id);
-- 
2.17.1